Bench-stop.



H. A. GURRIES.

BENCH STOP.

APPLlcATloN FILED Aucm, i916.

Patented Jun@ 18, 1918.

2 s'HEETsv-SHEET 1.

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INVENTOR. H. A.. 5MP/HES W I TNESSES HIS A TTORNE YS H. A. GURRIES.

BENCH STOP.'

APPLICATION FILED AUILIS, I9Is.

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Patented June 18, 1918.v

2 SHEETS-SHEET 2.

INVENTOR. H. A. 60E/W55 /7//5 A TTORNE YS UNITED STATES PATENT onirica.

:HENRY A. GURRIESVOF PALG ALTO, CALIFORNIA.

BENCH-STOP.

Specirication of Letters Patent. Patented June 18 1918 Application iledAugust 15, 1916. Serial No. 114,994.

. vide a bench ystop having a vertically adjustable V-blocl: ther-ein.

Another object of my invention is toprovide a bench stop having a.vertically adjustable V-block and retaining points for holding lthe endof the work in the'V-block.

'The'invention possesses other features of advantage, some of which,with the foregoing, will be set forth in lthe vfollowing deyscription ofthe preferred form of my iiivention which is illustrated in the drawingsaccompanying and forming part of `the specication. It is to beunderstood that l do not limit myself to the showing made by thesaiddrawings and description, l may adopt variations `of the preferred .formwithin the scope of my invention as set forth `in the claims.

Referring to the drawings:

- Figure 1 is a top 4view of :the bench stop of my invention, portionsVbeing'loroken away to show the construction.

Fig. 2 is a vertical section of the-bench stop taken on the line 2f-2 ofFig. 1.*

Fig. 3 is a front elevation of the bench stop arranged in the top of :abench, portions being broken away to show Vthe. .construction. The dogis shown in the raised, position.

Fig. 4 .is a `fragmentary side view ofthe stop showing the lV-blofckinthe raised position. Portions are broken awaytodisclose the structure.

Fig. 5 is a top view-.of a modified form of bench stop, .the V-blockbeing raised.v l

Fig; 6 is a fragmentary vertical section of the benchstop shownfin Fig.v5, taken on the'line 6-6 ofthatiigure.

Fig. 7 is a vertical section ofthe bench 4stop similar to Fig.y 6, butwith the Vflcloclr' `A fragment of the f in its lower position. C benchtop lin whichzthe stop :is-set is also shown. Y

Figs. 8 and 9 are fragmentary frontfelevations of the bench stop.showingthe V- block in the low and raisedV positions .respectively.Portions are broken out inboth figyures to show the construction.

Fig. 10 is a top view of a modified form of my invention.

My invention includes yan outer yshell which is .secured in a suitableapertureY in Ithe bench top. Within the shell are two members normallylying together and V.ca-

pable of being pulledy up by :the fingers, as

a unitary structure to serve as a @0g or stop, against which aboardmaybe planed. One of these two members is vcapable ofbe- .ing raisedalone from the rest 0f the .structure and its shape is :such that itprovides a V-block into which the end of a boardv isv Means are providedfor re-V taining the board in the fV-block, while the adapted to lie.

edge is being jointed.

Referring first to Figs. 1 to 4L inclusive, a shell 6 is .provided in`which the other members of the device are contained, Preferably theshell is formed of sheet metal and is of such section that it will fit around hole which has been squared outfon oneside. lTVithin the shell 6is closely fitted a member 7 preferably of cast4 ste'elin the forwardsurface of which a V-shaped groove has been cut. In Fig. 1 this grooveisindicatedfby the lines 8 and 9. Forgthelsaleof lightness the member 7is recessed at l.both sides, ,leaving an edge 12 on the rear, and edgesland 14 at the front corners, to bear'against the inside of the shell andmaintain the position ofthe member therein. The member Toonstitutes theV-bloclrin my bench'stop 'and it is vertically adjustable within theshell 6, so that it may be extended to a greater or less height abovethe top of theubench as needed.

Arranged within the groove ofl the V- block 7 is a center block 16 oftriangular section preferably also of cast steel and formed hollow forthe sake of lightness. rlhe center block 16 is shaped to fit the spaceformed by the V-groove and the front wall 6zlL ofthe shell 6 and is.slidable therein. At the lower end of the block `16 is secured a spring18 which frictionally `engages the shell wall 6a, pressing thelblock 16into the groove and the V-b'lockv 7 against the, rear ofthe shell 6,thus maintaining both center block and .V-block in position within theshell. g l

If desiredyaflange or earsg21`,"Fig. 5,

may be formed at the tbp of the shell to position the latter in thebench top 22, but a cleat 23, Fig. 3, may be secured on the under sideof the bench for the same purpose.

At the upper front portion of both block and V-block, a roughenedsurface 25 is provided. This surface juts out from the front of theblocks and provides a non-slip contact against which the work bears whenmy device is used as an ordinary stop as in Fig. 3. In such a use, theblocks 7 and 16 constitute a dog and act as a unitary structure, theirtop surfaces being flush. If, however, a board is to be jointed on itsedge, the V-block 7 is pulled up alone leaving the block 16 stationaryas in Fig. 4. The V- block may be raised to the height desired, where itremains owing to the frictional contact with the shell caused by thespring A notch 27 formed in the back of the V-block provides means forsecurin a hold whereby the block may be raised ant preferably the bench22 is recessed at 28 and 29 to facilitate engagement of the fingers withthe dog as a whole.

Means are provided for engaging the bottom edge of a board held in theV-block so that it is not easily disengaged therefrom,

A bar 31 is pivotally mounted in the top of the block 16, notches orbearings being cut in the walls of the block to receive the bar. The baris retained in the bearings by the plate 16a secured on the top of theblock 16 by the screws 34. On the end of the bar 31 is an arm 35 whichlies within a groove 36 formed in the V-blocl. At the top, the groove 36is widened abruptly to form a shoulder 37, best shown in Fig. 4. The baris provided with suitably'spaced retaining points 39 which normally liebelow the top 16a when the V-bloclr 7 and the block 16 are together withtheir top surfaces flush as in Fig. 2. As the V-block 7 is drawn up andaway from the block 16, the arm 35 is wiped over the shoulder 37, thusrotating the bar and turning the points 39 upward through the apertures41 in the plate 162L into a vertical position. This relation of partswith the V-block raised is shown in Fig. 4, the arm 35 bearing againstthe side of the groove and the points 39 bearing against the left endsof the apertures. The retaining points in this position engage thebottom edge of the piece which is inserted in the V-block, retaining thepiece therein. Obviously but one retaining point may be used, but Iprefer two spaced as shown, since matched boards are more easilyretained thereby. When the V-block is no longer needed it is pushed downflush with the center block, and means are provided for causing theretaining points to be turned down below the surface of the center blockwhen the V-block is lowered to this position.

A pin 38 is arranged in such a position that as the V-block approachesthe lower position, the arm 35 is engaged by the pin and turneddownwardly to lie across the shoulder 37. This turns the bar and hencethe points 39 into the position shown in Fig. 2. It `is thus apparentthat the retaining points 39 follow the movement of the V- block,turning up during the first portion of the upward movement of theV-block and turning down during the last portion of the downwardmovement.

Means are provided whereby the raising of the retaining points isavoided if it is desired to dispense with them in the use of theV-block. The bar 31 is arranged to slide longitudinally in its bearingsin the center block. A spur 42 is secured to the bar so that thislongitudinal movement may be effected, the spur projecting a smallamount above the surface so that it may be engaged by the thumb nail. Anotch 43 is formed in the top plate 16 to accommodate the spur when thebar 31 is shifted to the side. At the side of the groove 36 is a sec ondgroove 44. When it is desired to raise the V-block without thevretaining points, the spur 42 is pushed over into the notch 43 thuscarrying the bar 31 to the right and alining the arm 35 over the groove44. `When the V-blocl is now raised, the arm is not moved by theshoulder 37, but lies unengaged in the groove 44. Movement of the spur42 to the left as in Fig. 1, places the arm 35 in position to be engagedby the shoulder 37 as rst explained. A notch 45 is left in front of thespur 42, in which it may lie when the bar is turned to elevate thepoints.

In Figs. 5 to 9 inclusive I have shown a modified form of my invention.The main dierence between the two types lies in the means for effectingthe automatic movement of the retainer. In this instance the block 16 ispreferably formed with an integral top. The sides are pierced withL-shaped holes 51 in which lie the retainer bar 31, preferably ofrectangular section in this case. Between the bar 31 and a bridge 53spanning the front of the block is disposed a at spring 55 the functionof which is to press the bar upward to the top of the holes 51 as inFigs. 6 and 9. The bar 31 is provided with points 39 convenientlyinserted therein after the bar has been seated in position in the block.The ends of the bar 31 project from the sides of the block to engagegrooves 57 formed in the walls of the V-block. The upper portion of thegrooves 57 are offset a small amount and the width is such that the endsof the. bar travel in the groove without binding.

When the V-block 7 and block 16 are together as shown in Fig. 7 with theupper surfaces flush, they may be used as a stop, the 13 55 is now undertension and the ends of the retaining points are in the inactiveposition below the surface of the block 16. If it is desired to use theV-block, it is pulled up to the posit-ion required as previouslyexplained. With the first upward movement of the V-block the pressure ofthe top wall 58 of the groove is removed from the ends of the bar whichlis raised to the top of the holes 51 by the spring 55. This position isshown at B, Fig. 6. Vith a further upward movement of the V-block, thebar is bodily moved forward, z'. e., the left of Fig. 6, to rest uponthe seats 61, by the action of the offset grooves 57 in which the endsof the bar engage. The parts are now in the position shown in Figs. 6and 9, the bar resting on the seats 61 and the points 39 bearing againstthe front of the apertures 42 and projecting through the top-of the`block to engage the piece held in the V-block. l/Vhen the V-block ispushed downwardly, the action of the grooves 57 moves the bar 31 to therear, 2'.. e., the right of Fig. 6, vand then as the top 58 of thegroove strikes the ends of the bar, it is forced downwardly against theresistance of the sprin to its low position as shown in Figs and 8.

In using the V-block to hold a board while jointing itsedge, the boardis pushed into the V-block as far as possible and above the level of theretaining points and then forced downwardly into engagement with thepoints, which secure it in position, and prevent its accidentalwithdrawal.

In Fig. 10, I have shown a modification of the structure shown inFig. 1. The center block and the outer shell are united in one member 51and the V-block 7 is movable within this member. The V-block in thisconstruction is raised a small amount with or without the retainingpoints, to serve as a dog in the ordinary use of the bench stop, or itmay be raised the full height .to serve as a V-block for supporting wideboards on edge. The front edges of the V-block are preferably roughenedto better hold the work as indicated at 25, Fig. 3.

I claim:

1. In a bench stop,a vertically adjustable dog comprising a center blockand a V-block adjustably arranged on said center block.

2. In a bench stop, a vertically adjustable center block, a verticallyadjustable V-block, and retaining points for said V-block arranged onsaid center block.

`3. In a bench stop, a vertically adjustable center block, a vverticallyadjustable V-block, retaining points for said V-block arranged on saidcenter block, and means for raising said points into operative positionautomatically when the V-block is raised.

4. In a bench stop, a vertically adjustable dog comprising a centerblock and a V-block adjustable upon said center block, and

means arranged in the top of said center block for retaining a piece' ofwork in said V-block.

5. In a bench stop, a vertically adjustable dog comprising a centerblock and a V-block adjustable upon said center block, a bar providledwith retaining points arranged in said center block and adapted to bemoved to bring said points into operative position by the movement ofsaid V-block.

6. A bench stop comprising a shell adapted to fit an aperture in the topof said bench, a vvertically adjustable dog disposedl in said shell,said dog comprising a center block and a separately adjustable Vblock,y

and means for retaining a piece of work in said V-block.

7. A bench stop comprising a shell, a vertically. adjustable dogfrictionally disposed in said shell, said do-g including a center blockand V-block, means for retaining a piece of work in said V-block andmeans operated by the relative movement between said center block andsaid V-b-lock for throwing said retaining means into operative andinoperative position.

In testimony whereof, I have hereunto set my hand at San Francisco,California, this 8th day of August, 1916.

HENRY A. GURRIES.

In presence of- C. S. EVANS.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

